CVE-2021-20220 HTTP request smuggling in Undertow

What is CVE-2021-20220?

CVE-2021-20220 is a medium-severity vulnerability in Netapp Active Iq Unified Manager, published on 23 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own. The highest threat from this vulnerability is to data confidentiality and integrity.

Weakness: CWE-444

Which versions are affected by CVE-2021-20220?

4 open source packages ship an affected version, including io.undertow:undertow-core. It affects 3 products.

Products include Netapp Active Iq Unified Manager, Netapp Oncommand Workflow Automation, Redhat Undertow.

How do I fix CVE-2021-20220?

Upgrade io.undertow:undertow-core to a fixed version for your release line: 2.0.34 or 2.1.6.

Is CVE-2021-20220 being exploited?

There is no known exploitation of CVE-2021-20220 in the wild and no public exploit code.

Other vulnerabilities in Netapp Active Iq Unified Manager

• CVE-2022-31692 Spring Security authorization rules can be bypassed via forward or include dispatcher types Critical 9.8
• CVE-2022-2526 Use after free in systemd-resolved Critical 9.8
• CVE-2022-22978 Authorization bypass in Spring Security Critical 9.8
• CVE-2021-22931 Code injection in Node Critical 9.8
• CVE-2018-2938 Code injection in Java Critical 9.0

All Netapp Active Iq Unified Manager vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2021-20220, GHSA-qjwc-v72v-fq6r, UBUNTU-CVE-2021-20220.